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G. W. LARAWAY & J. E. WEST.

PRESS FOR FINISHING MOLDED ARTICLES.

No. 526,717. Patented Oct. 2,1894.

217mm J/VVW/Vl/WQ 5% a; wa a Z/ 95% (N0 MOd-e'lQ) u 2 Sheets-Sheet 2'.

- VG. W..LARAWAY & J. E. WEST.

PRESS FOR FINISHING MOLDED ARTICLES.

"N0'.526,717.' Patented Oct. 2,1894.

AT S JGEORGE W, LARAWAY; on HARTFORD, oonNEcrrIoUnlxNn JOSIAH E.

WEsnoF sncLoUD, MINNESOTA; SAID LARAWAYASSIGNOR TO SAID WEST.

PRESSFORflNiSl-HNGJVIOLDED. temi e 1 srnoxrrcn rron forming part: ofLetters Patent No: 5265217, eateaotobre, 1894.

Application fi1ed Apri120fl892. seritirwizasaa. (Remodel) '10 a, whom itmay concern.-.' T p Be it'known that we, GEORGE W. LARAWAY, of Hartford;in the county of Hartford and State ofCpnnecticut,andJosIAH'E. WEsT, ofSt. Cloud, in the county offi tearns and State of Minnesota,have'invented certain new and useful Improvements in PressesforFinishing Molded-Articles, of whigrh the following is'a full, clear,and exact description, whereby any one skilled in the art can make anduse the same 7 J The object of our invention is'to provide means bywhich-articles that have been moldedto shape by great pressure and heatmay be" rapidly finished without retarding 4 the'work, asthe economy'inthe production- Io'fisuch articles. depends largely upon the rapidit'with which they can be formed in the-press. l 'Our invention consistsinithe details of the several parts making up the finishing ma chine asa whole, and in their combination, as more particularly hereinafterdescribed and pointed out in the claims.

.Referring to the drawings :Figure l; is a detail viewin elevation ofthe finishing machine with parts cut away in section to? showconstruction. Fig; 2is a detail plan view of the top of the central moldsection. V Fig. 3 is a detail view in horizontal section v through thecentral mold part, on theline of the inlet and outlet pipes to thece'ntral mold part. Fig; 4'is'a detail view in horizontal sectionthroughtheupper part of the press and swing-- ingblpck, oil a '-line'-justyunde'rneath. the stuflingbox.l .The articles that are tome-finishedin our improved machineand processare molded from'what isknown as paperpulpor fiber,

but more especially from materialin a finely.

.p'owdered'dry state combined with resinous gums that require heat aswell as pressure in the'forniation of the article.

' article has been pressed to; shape in molds in any suitable manneritiis removed from such a'machine andin that condition is. ready-to beoperated upon in the within described finiishing machine in ordertoygive thearticle the requiredstrength and finish.- P

within the steam cylinder.

After such an j In, the accompanyingfdrawings theletter aff denotes theframe of a press, preferably hy draulic; b, the press cylinder; 0, thepress posts and d the cross-head or top-plate that is sup- .portedby theposts that are usually four in Within the press is'arranged the number.usual mm or plunger e that supports the platen f and onthis platen issupported the mold part g of a sectional mold that has a socketofisuitable shape to receive the article that isto be finished in thepress. This mold part g'has a chamber g withQinlet pipes g and outletpipes y that enable a constant stream ofcold water tobe flowed throughthe chamber whilethe press is in operation, and

it is the object 'of the device t6 thoroughly cool the article duringthe-finishing process. 1

Within the socket is preferably arranged a movable bottom plate havinga'stemh' ex: tending downward through the bottom'of the mold and platenand so connected to a lever 'i as to enable the bottom plate to belifted to a greater or less degree in order to startthe.

article out ofthe socket in the mold after it vhas been finished. Thelever is-fulcrurned in a suitable position on the edge of the out- -letinLthe ranithrough which the lever passses.

On the cross-head d is supported a lifting device j that comprises asteam cylinder having the two supply pipes k k properly locatedto'recip'rocate the piston Z located secured the piston rod Z thatextends downward through a stufling-box win. and has sec'ured to itslower end a mold part 4?. of the sectional mold that forms acomplementary mold g. This central mold part It/has a chamher n andconnected to'it are an inlet 'pipe 01. and an outlet pipe n fl'sai'd'pipes being flexible to allow'for the necessary movement of the centralmold "part and the pipe n having a branch extending to a point near thebottom of the chamber to enable water to be forced completely out'ot theghamber when To this piston is necessary, the pipes being used, however,to A maintain a constant circulation of water through the central moldsection, .The uppen part of the.rnoldseotionsupports a sliding ringo'that has a flange o' fitting-a shoulflush with the upper surface ofthe mold tion of the ring from the mold member mby moving too farupwardly. The slides are.

and its loweredge forms the remaining section of the mold needed to;inclose the article (in this case a pail) that is being finished in thepress. The ring is provided with slots 0 on opposite sides soas topermit the pipes n and n? to be connected to the ,mold part and yetallow the ring to have sufficient vertical play. The pipes 073 n bybearing on the bottom walls of the slots 0", preventthe separashownherein as being closed on the lower side of the ring, but if desiredthey maybe open, i

To one of the mold posts is pivotally connected a swinging block 'r thatis so arranged as to be brought into position directly over the top ofthe mold part at and underlying the cross-head d and'forming a sort offilling piece. This block is slotted along one side so as to prevent thepiston rod from forming any obstruction to its movement. -When thisswinging block r is in position the ram of the press may be lifted andthe article held within the moldsubjected to a pressure of any degreeWllhlll the capacity of the press.

The article is removed from the press by swinging the block '0" to oneside and thenby means of the lifting devicej raisingthe central moldsection that carries with it themolded article. As the upward movementof this central mold part n continues the upper edge of the ring 0finally encounters the lower edge of the stripping device 3 that con:sists of a series of blocks secured to the lower, side of the cross-headd, and the ring 0 mov- 1n g downward thrusts against the upper edge ofthe pail or other article and strips i-t from the mold without injuringit. The lever '11 may be used if need be to lift the disk h to aid theremoval of the article from the lower section of the press when thelifting device is first put into operation.

By means of this apparatus a pail or other hollow molded article can befinished with great rapidity and certainty. p

The surface of the article that has been in contact with the mold has apeculiarly dense,

as the result 1. In a press for finishing. molded articles seem 7L froma lifting device, the mold lifting device, the flanged slidingringarrangedon the top of the mold part, the stripping blocks 3 se- 6ocured in the path of movement of the ring 0 and the outer mold partyallsubstantially as described. e v v.

2. In a press for finishing molded articles in combination the outer andchambered 6 5. mold part supported on the plunger of the press, theinlet pipe entering the top of the chamber and" the outlet'pipe'con'nected to the lower part of the chambena' movable disk formingthesbottpm part of the socket within the said mold part, achambered'central part suspended from a lifting device, the liftingdevice, the flanged sliding ring supported on the top of the centralmold part, and the stripping device arranged in the path of movement oftheri'ng, all substantially as de scribed. I

3. In combination in a'press the sectional mold, the cen'tral'mold partsuspended from a lifting device, the lifting device, and a 8o swingingblock arranged to be interposed between the central mold part and thecross head of the press, all substantially as described. p

4. In'combination with a press, a sectional mold having a centralsection supported by a lifting device, the chamber within the centralmold section, a fluid supply pipe with a branch extending to the bottomof the cham-' her, the flanged. sliding ring'supported onngo the top of'the central mold part, the stripping block secured to the crosshead ofthe press in the line. of'the path of movement of the sliding ring,and'the lifting device, all. substantially as described. I

5. In a press in combination with the platen supported on the plunger,the sectional mold the outer section of'which is adapted to be supportedon the platen, the cross. headsupported on the press posts and aswinging I00 block adapted to be interposed between the .cross head andthe sectionaLmold, all sub stantially as described.

GEORGE W. LARAWAY; JOSIAH E..WEST.

Witnesses as to signaturgof George W. Laraway:- I

- CHAS. L. BURDETT,

A. B. JENKINS. Witnesses as to signature of Josiah E. West:-

- GERTRUDE CAMBELL,

F. J. EACH: 7

